C-14 DATING OF SOIL ORGANIC CARBON (SOC) IN LOESS-PALEOSOL USING SEQUENTIAL PYROLYSIS AND ACCELERATOR MASS SPECTROMETRY (AMS) | |
Cheng, P (Cheng, Peng)[ 1,2 ]; Zhou, WJ (Zhou, Weijian)[ 1,2,3 ]; Wang, H (Wang, Hong)[ 4 ]; Lu, XF (Lu, Xuefeng)[ 1,2,3 ]; Du, H (Du, Hua)[ 1,2 ] | |
2013 | |
发表期刊 | RADIOCARBON |
卷号 | 55期号:2-3页码:563-570 |
文章类型 | 期刊论文 |
摘要 | The chemical extraction of soil organic carbon (SOC) fractions from soils often does not produce satisfactory results for radiocarbon dating. In this study, a sequential pyrolysis technique was investigated. The soil was pyrolyzed at temperatures of 200, 400, 600, and 800 degrees C to partition organic carbon into pyrolytic volatile (Py-V) and pyrolytic residue (Py-R) fractions. The preliminary results show that the C-14 dates of both fractions become progressively older as the pyrolysis temperature is increased. In addition, the ages of the Py-V fractions are consistently younger than the corresponding Py-R fractions extracted at the same temperature. Experimental results of known-age paleosol samples indicate that the Py-V fractions obtained between 600 and 800 degrees C yield the most reliable ages. This technique provides a new approach to improve the accuracy of C-14 dating of loess-paleosol sequences. |
收录类别 | SCI |
语种 | 英语 |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/9902 |
专题 | 加速器质谱中心 |
通讯作者 | Cheng, P (Cheng, Peng)[ 1,2 ] |
作者单位 | 1.State Key Lab Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an710075, China; 2.Shaanxi Province Key Laboratory of Accelerator Mass Spectrometry Technology and Application, Institute of Earth Environment, CAS, Xi’an 710043, China; 3.Xi’an Jiaotong University, Xi’an 710049, China; 4.Illinois State Geological Survey, Prairie Research Institute, University of Illinois, Champaign, Illinois 61820, USA |
推荐引用方式 GB/T 7714 | Cheng, P ,Zhou, WJ ,Wang, H ,et al. C-14 DATING OF SOIL ORGANIC CARBON (SOC) IN LOESS-PALEOSOL USING SEQUENTIAL PYROLYSIS AND ACCELERATOR MASS SPECTROMETRY (AMS)[J]. RADIOCARBON,2013,55(2-3):563-570. |
APA | Cheng, P ,Zhou, WJ ,Wang, H ,Lu, XF ,&Du, H .(2013).C-14 DATING OF SOIL ORGANIC CARBON (SOC) IN LOESS-PALEOSOL USING SEQUENTIAL PYROLYSIS AND ACCELERATOR MASS SPECTROMETRY (AMS).RADIOCARBON,55(2-3),563-570. |
MLA | Cheng, P ,et al."C-14 DATING OF SOIL ORGANIC CARBON (SOC) IN LOESS-PALEOSOL USING SEQUENTIAL PYROLYSIS AND ACCELERATOR MASS SPECTROMETRY (AMS)".RADIOCARBON 55.2-3(2013):563-570. |
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